Wavelet analysis of detailed drillhole magnetic susceptibility data, Brockman Iron Formation, Hamersley Basin, Western Australia

Archaean to Lower Proterozoic banded iron formations (BIFs) of the Hamersley Group (Harmsworth et al., 1990) are the host rocks for a number of hematite and hematite-goethite ore-bodies. The Hamersley Group (Figure 1) consists of four major banded iron formations separated by sequences of dolomites, shales and volcanics. Economic iron ores occur within the Dales Gorge and Joffre members of the Brockman Iron Formation and the Mount Newman Member of the Marra Mamba Iron Formation (Figure 1).